fix: update BGP configuration in test scenarios to use new IPv6 addresses

internal/birdfmt/testdata/scenarios/bgp_dual_peer/bird.conf

@@ -19,8 +19,8 @@ protocol bgp peer_a {
 }
 
 protocol bgp peer_b {
-    local fd00:ebgp::1 as 65001;
-    neighbor fd00:ebgp::3 as 65003;
+    local fd00:cafe::1 as 65001;
+    neighbor fd00:cafe::3 as 65003;
     ipv6 {
         import all;
         export all;

internal/birdfmt/testdata/scenarios/bgp_ipv6_peer/bird.conf

@@ -10,8 +10,8 @@ protocol direct {
 }
 
 protocol bgp peer_v6 {
-    local fd00:ebgp::1 as 65001;
-    neighbor fd00:ebgp::2 as 65002;
+    local fd00:cafe::1 as 65001;
+    neighbor fd00:cafe::2 as 65002;
     ipv6 {
         import all;
         export all;